Permutation-lock.



C. L. KAPS.

PERMUTATION LOCK.

APPLICATION mzo MAY 3. 1915.

1 16121 & Patented Nov. 23, 1915.

2 SHEETSSHEET I.

coLuMmA PLIKNDAIRAM! C0., WASHINGTON. n.c.

C. L. KAPS.

PERMUTATION LOCK.

APPLICATION man MAY 3. 1915.

Patented Nov. 23, 1915.

4 2 SHEETS-SHEET 2.

inirirnn sra'rias ratrnur oi ribn.

CHARLES L. xars'or CLEVELAND, OHIO.

PERMUTATION-LO CK.

To all whom it may concern Be it known that LCH RLES L. KAPs, citizen of the United States, residing at Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Permutation- Locks, ofwhich the following is a specification.

This invention relates to permutation locks of that type having a plurality of sliding tumblers comprising rack bars operated by pawl and ratchet mechanism, the ratchets carrying pinions which engage the rack bars, and the pawls being operated by push buttons to set the tumblers and permit the bolt to be retracted.

The invention is illustrated in the accompanying drawings in which- Figure 1 is an outside elevation of the lock. Fig. 2 is an end elevation. Fig. 3 is an inside elevation. Fig. 1 is an elevation of the lock mechanism as seen from the side next to the door. Fig. 5. is a vertical section with the inner look plate broken away. Fig. 6 is a vertical section on the line 66 of Fig. 1. Fig. 7 is a detail in perspective of' thedetent releasing mechanism. Fig. 8 is a perspective of an indicating device. Fig. 9-

indicates a door, on the inside of which is mounted a lock casing 11 provided with a sliding latch bolt 12. An inner knob 13 is mounted to turn on the lock casing, and has at its inner end a. lug 13 arranged to strike a projection 12 at the tail of the latch bolt 12, so as to retract said bolt when desired, the projection 13 acting as a crank against the latch bolt. The latch bolt is normally advanced by a spring 40 coiled around a rod 38 and in compression between a lug 39 on the bolt, and to which the rod 38 is attached, and a lug 37, through which the rod works,

on a sliding frame or carriage 31, to be hereinafter described. A lug 41, on the latch bolt 12, acts as a stop against the casing 11 to limit the advance of the bolt. 13 and connecting parts enable the latch to be readily withdrawn or released from the inside of the door. The latch bolt 12 can move inwardly independently of the carriage 31, the spring 10 being then com-' pressed.

On the outside of the door 10 s an escutcheon plate 14 in which is mounted a set I Specification of Letters Patent.

Application filed May 3, 1915.

The knob Patented Nov. 23, 1915.

Serial No. 25,440.

the movement being limited by pins 20 and washers 19 behind the bushings 16. The inner ends of the push rods I? bear against blocks 21 which slide laterally in the casing, being normally pressed out by springs 100. These blocks carry pawls 22 which are pressed up bysprings 21, which will permit back slip of the pawls. When moved forwardly or inwardly the pawls 22 engage the teeth of ratchets 23, to turn the same one tooth at, each advance of the pawls. Each ratchet is fixed to a pinion 24:. and each pinion meshes with the rack 25 on a vertically sliding tumbler 26. The pawls turn on a fixed shaft 28 mounted in the frame 31. A spring 27 connected betweeneach ratchet and the shaft 28, tends to return the ratchet when its detent 29 is released. This detent 29 is secured to a rock shaft 30, mounted in the frame 31, and the shaft 30 is normally turned to engage the detents with the ratchets, to prevent back turn thereof; but the detents may be released by rocking the shaft-30 by means to be hereinafter described.

The pawl and ratchet mechanism, and the tumblers26, are mounted in a sliding carriage. or box likeframe 31 which is adapted to slide horizontally in'a guide frame 32 fastened to the casing 11, theframe 32 being U shaped in cross section, with its upper and lower flanges projecting inwardly or toward the doorlO. The carriage 31 has openings 33 in the upper and lower sides thereof, and the guide frame 32 has corresponding openings or'slots 341 in the upper and lower flanges-thereof. The tumblers 26 may slide up or down through said openings, which correspond in size and position to the tumblers. The tumblers are of such length that when in a certain or releasing position, as shown in Figs. 6 and 9, their endsdo not project beyond the upper and lower flanges of the carriage 31. Consequently the carriage can be moved'in the guide frame' 32. But when the tumblers are 1 advanced through theopenings 33 and 34, as shown in dotted lines in Fig. 9, the carriage is locked to the frame 32a'nd cannot be moved. The tumblers 26 slide up and down in guide of a sliding bolt, a guide frame, a carriage connected to the bolt and slidable in the frame, tumblers mounted on the carriage and engageable with the frame to prevent movement of the carriage, means to disengage the tumblers from the frame, to permit movement of the carriage and bolt, and means to rengage said tumblers With the frame, to prevent movement to the carriage and bolt.

2. In a permutation lock, the combination of a sliding bolt, a carriage having a yielding connection to the bolt, permutation mechanism controlling movement of the carriage, means at one side of the lock to move the bolt independently of the carriage, said movement being permitted by said yielding connection, and means at the opposite side of the lock to move said carriage and bolt.

3. In a permutation lock, the combination of a sliding bolt, a fixed guide frame having openings, a carriage slidable in said frame and connected to the bolt, tumblers mounted on the carriage and slidable into and out of said openings to lock the carriage to the frame, means to operate the tumblers to Withdraw the same from the said openings,

-to permit movement of the carriage and bolt, means to produce such movement, and means to reengage the tumblers in said openings. p

4. In a permutation lock, the combination of a bolt, a sliding carriage connected thereto, sliding rack tumblers mounted on said carriage, a frame normally engaged by said tumblers to prevent movement of the carriage, pinions in mesh with the racks, to move the tumblers, push pin devices operatively connected to said pinions respectively, to operate the same and release the tumblers, and means to restore the tumblers to engaging position.

5. In a permutation lock, the combination of a sliding tumbler having a rack, a bolt Whose movement is controlled by said tumbler, a pinion in mesh With the rack, to shift the tumbler, a ratchet Wheel attached to the pinion, a pawl engageable With the ratchet, and a push pin bearing against the pawl to advance the same and turn the ratchet.

6. In a permutation lock, the combination of a sliding bolt, a carriage connected thereto, a set of sliding tumblers mounted on the carriage, a frame engageable by said tumblers to prevent movement of the carriage, means to shift the tumblers to engaging or releasing position, and adjustable stops to limit the movement of the tumblers to engaging position.

7 In a permutation lock, the combination of a sliding bolt, a carriage connected thereto, a set of sliding tumblers mounted on the carriage, a frame engageable by said tumblers to prevent movement of the carriage, means to shift the tumblers to engaging or releasing position, and adjustable stops to limit the movement of the tumblers to engaging position, said adjustable stops comprising shiftable sleeves With stop arms in the line of movement of the tumblers, and screws engaged With said sleeves to adjust the same.

8. In a permutation lock, the combination of a guide frame having openings, a sliding bolt, a sliding carriage in said frame, connected to the bolt, sliding tumblers in the carriage, engageable in the openings to prevent movement of the carriage, pawl and ratchet mechanism mounted on the carriage and operatively connected to the tumblers respectively to shift the same, push pins e11- gaging the paWls respectively to operate said mechanism in one direction to Withdraw the tumblers from said openings, means to retract and advance the carriage and bolt, and means to return said mechanism and reengage the tumblers when the carriage and bolt are advanced.

In testimony whereof, I affix my signature in presence of tWoWitnesses.

CHARLES L. KAPS. Witnesses:

JOHN A. BOMMHARDT, S. W. BRAINARD.

Co ies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

